Kate Beckett stared at the strange man in the trench coat. He was closely inspecting one of the strange blood-drawn symbols that covered the room. His partner, Anderson, walked in with Castle trailing in his wake.
"What you think Ed?" Anderson yelled to him. Ed Moscone motioned for the man to come over.
"De- Tom, the markings are Enochian. But this is not human or demon blood."
"What type of blood is it?" Anderson asked his partner. The partner looked around, distressed.
"Tom, it is angel blood," Moscone sounded strained.
"Shit. Is this part of the mess you have upstairs?" Anderson asked. Moscone shook his head.
"Is this all code for something?" Kate asked finally. Moscone swung around to stare at her, "What is Enochian? And what do you mean Angel's and Demons?"
"Well, uh, gangs," Tom answered, scratching the back of his neck.
"Okay... so we are dealing with gangs now?" Castle asked. Moscone smiled sweetly.
"Richard, can I call you Richard? Two of these are very powerful gangs, Enochian is a code that the two gangs often use to communicate when they aren't warring; or to, when they are warring, send warnings. The Angels and the Demons love to use these smaller gangs, we prefer to call them humans cause it seems so fitting, to do some of their dirty work. In reward the humans often get to join the big gang."
"You said that the blood was angel blood. How can you tell?" Beckett asked.
"Ah, well..." Ed started.
"It's the shade of red it is," Tom interrupts to explain, "Ed's a wizard when it comes to color's. He can tell you the exact shade difference. That's why they always have us come investigate the gang killings. We were told this was an angel hit. As in angels making the hit... now we aren't so sure." Beckett nodded in response. It all seemed way too complicated to her.